maketext.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * Additional copyright for this file:
 * Copyright (C) 1994-1998 Revolution Software Ltd.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef SWORD2_MAKETEXT_H
#define SWORD2_MAKETEXT_H
 
#include "sword2/debug.h"
 
namespace Sword2 {
 
// Output color for character border - should be be black but note that we
// have to use a different pen number during sequences
 
#define BORDER_PEN 194
 
// Usually the only texts on screen are the subtitles and the mouse-over text,
// but there can also be a considerable number of debugging messages...
 
#define MAX_text_blocs MAX_DEBUG_TEXTS + 1
 
enum {
    // Doesn't keep the text inside the screen - only for debug text!
    NO_JUSTIFICATION = 0,
 
    // These all force text inside the screen edge margin when necessary
    POSITION_AT_CENTER_OF_BASE = 1,
    POSITION_AT_CENTER_OF_TOP = 2,
    POSITION_AT_LEFT_OF_TOP = 3,
    POSITION_AT_RIGHT_OF_TOP = 4,
    POSITION_AT_LEFT_OF_BASE = 5,
    POSITION_AT_RIGHT_OF_BASE = 6,
    POSITION_AT_LEFT_OF_CENTER = 7,
    POSITION_AT_RIGHT_OF_CENTER = 8,
    POSITION_AT_CENTER_OF_CENTER = 9
};
 
enum {
    DEFAULT_TEXT = 0,
    FINNISH_TEXT = 1,
    POLISH_TEXT = 2
};
 
// Info about the text, used to create the SpriteInfo struct
 
 struct TextBloc {
    int16 x;
    int16 y;
    uint16 type;
    byte *text_mem;
};
 
// Info for each line of words in the output text sprite
 
struct LineInfo {
    uint16 width;   // Width in pixels
    uint16 length;  // Length in characters
    bool skipSpace; // Whether there is a trailing space
};
 
class FontRenderer {
private:
    Sword2Engine *_vm;
    TextBloc _blocList[MAX_text_blocs];
 
    // Layout variables - these used to be defines, but now we're dealing
    // with three character sets
 
    int8 _lineSpacing;  // no. of pixels to separate lines of
                // characters in the output sprite - negative
                // for overlap
    int8 _charSpacing;  // no. of pixels to separate characters along
                // each line - negative for overlap
    uint8 _borderPen;   // output pen color of character borders
 
    Common::HashMap<Common::String, Common::String> _subTranslations;
    static const int kChineseWidth = 20;
    static const int kChineseHeight = 26;
    struct ChineseGlyph {
        byte bitmap[kChineseWidth * kChineseHeight];
    };
    Common::Array<ChineseGlyph> _chineseFont;
 
    uint16 analyzeSentence(const byte *sentence, uint16 maxWidth, uint32 fontRes, LineInfo *line, bool isChinese);
    byte *buildTextSprite(const byte *sentence, uint32 fontRes, uint8 pen, LineInfo *line, uint16 noOfLines, bool isChinese);
    uint16 charWidth(byte ch, uint32 fontRes);
    uint16 wcharWidth(byte hi, byte lo, uint32 fontRes);
    uint16 charHeight(uint32 fontRes);
    byte *findChar(byte ch, byte *charSet);
    byte *findWChar(byte hi, byte lo, byte *charSet);
    void copyChar(const byte *charPtr, byte *spritePtr, uint16 spriteWidth, uint8 pen);
    void copyWChar(const byte *charPtr, byte *spritePtr, uint16 spriteWidth, uint8 pen);
    void copyCharRaw(const byte *source, uint16 charWidth, uint16 charHeight, byte *spritePtr, uint16 spriteWidth, uint8 pen);
    bool isKoreanChar(const byte hi, const byte lo, const uint32 fontRes);
 
public:
    FontRenderer(Sword2Engine *vm) : _vm(vm) {
        for (int i = 0; i < MAX_text_blocs; i++)
            _blocList[i].text_mem = nullptr;
    }
 
    ~FontRenderer() {
        for (int i = 0; i < MAX_text_blocs; i++)
            free(_blocList[i].text_mem);
    }
 
    byte *makeTextSprite(const byte *sentence, uint16 maxWidth, uint8 pen, uint32 fontRes, uint8 border = BORDER_PEN);
 
    void killTextBloc(uint32 bloc_number);
    void printTextBlocs();
 
    uint32 buildNewBloc(byte *ascii, int16 x, int16 y, uint16 width, uint8 pen, uint32 type, uint32 fontRes, uint8 justification);
 
    void loadTranslations();
};
 
} // End of namespace Sword2
 
#endif